Warp stop-motion for looms



(No Model. 3 Sheets-Sheet 1.

J. VIOKERMAN.

WARP STOP MOTION FOR LOOMS. No. 572,918.- Patented Dec. 8, 1896.

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(Nd Model.) 3 Sheets-Sheet 2.

J. VIOKERMAN. WARP STOP MOTION FOR LOOMS.

No. 572,918. Patented Dec. 8, 1896.

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J. VIGKERMAN.

WARP STOP MOTION FOR LOOMS. No. 572,918. 7 Patented Dec. 8,1896.

, NITED STATES PAT NT OFFICE.

JOHN VICKERMAN, OF LONGFORD, ENGLAND, ASSIGNOR TO PA UL \VHITING, OFLAMY, TERRITORY OF NE\V MEXICO.

WARP STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 572,918, dated December8, 1896.

Application fil d June 22, 1895- Serial No. 553,653. (No model.)Patented in England July 20, 1892,1Io.13,256,a11d e '7, 1893,110.11,130; in France September 27,1894,N0.228,690; in Germany September 28,1894,1lo. 81,218; in Belg September 28, 1894:, No. 112,042, and inAustria September 29, 1894, No. 45/179.

To all whom. it ram 0011100772..-

Be it known that 1, JOHN VICKERMAN, a subject of the Queen of GreatBritain, and a resident of Longford, Minchinhampton, near Stroud,Gloucester, England, have invented certain new and useful Improvementsin arp Stop-Motions for Looms, (patented by me in Great Britain July 20,1892, No. 13,256, and June 7, 1893, No. 11,130; in Germany September 28,1894, No. 81,218; in France September 27, 18941, No. 228,690; in BelgiumSeptember 28, 1894, No. 112,042, and in Austria September 29, 1894:, No.45/179,) and I do hereby declare that the following is a full, clear,and exact description of the same. This invention refers to stop-motionsfor power-looms; and the object thereof is to stop the loom on thebreakage, failure, or undue slackness of an end or ends of warp and toindicate to the weaver the position or positions or sections of the warpin which the end or ends is or are down.

For the purposes aforesaid I employ suitable healds and lingoes orweighted hed- 2 5 dles, through which the ends of the warp are threaded.The said heddles are steadied and kept apart by suitable cross rods,wires, or cords, and in the same plane or at the same angle as the lowerhalf of the shec and 0 supported by a heddle-case, are other cross rods,wires, or cords, on which the warp forming the lower half of the shedrests when intact. The position of the last-named rods does not permitthe warp and heddles to descend to the full extent of the downwardmovement of the heald shafts or frames so long as the warp is at theproper tension and intact, but should an end break, fail, or becomeunduly slack its corresponding heddle is drawn down to its full extentby the weight of the lingoes, which lowers through a sectiongrate into areciprocatory grate or carriage actuated by levers from the crank-shaftor other rotary part of the loom, whereby the section- 5 grate is slidendwise and oscillates a sectionlever which engages a correspondingsectionframe fast on the stop or knocking-off rod and rocks saidstop-rod so as to bring the loom to a standstill. The section-lever alsocarries a pointer or locking-finger which is 5: adapted to engage with afixed cross-rail and hold the parts out of action until released by theweaver and to indicate to the weaver the section or portion of the warpin which the broken end is to be found.

In the accompanying drawings, Figure 1 is a sectional transverseelevation of the heddle frame or case, heddles or healds, and partscomprising my improved warp stop-motion. Fig. 2 is a front elevation ofa part of same. Fig. 3 is a plan of the reciprocatory grate or carriage.Fig. 4 is a longitudinal section of same. Fig. 5 is a detail of one ofthe brackets carrying the pulleys by which the grate is supported. Fig.6 is a plan of one of the section-grates and the angle-irons supportingsame and forming ways in which the grates are capable of being slid.Fig. 7 is an enlarged section of the angle-iron, showing thesection-grates resting thereon. Figs. 8, 9, 10, and 11 show the forms ofheddles or healds I may use in connection with my invention. Fig. 12 isa detail View showing the tapered upper edges of the grates.

Referring to the drawings, a represents the 7 5 heald or heddle shafts,from which are suspended the heddles 12, preferably composed of wire andprovided with mails or eyelets 0, through which are passed thewarp-threads d. The heddles are suspended from the shafts a by loops ofstring passed through eyelets or openings at the upper ends of theheddles and around the shafts, and said loops of string may be separatefrom each other or connected together by a string or knitted to arig-band, as in ordinary worsted or cotton healds. To the lower ends ofthe heddles are attached weights or lingoes I), having tapered orpointed ends.

Instead of a single shaft a frame a maybe used, such as is shown in Fig.11, the bottom rail or shaft being grooved or having a slot formedtherein through which the heddles are passed and shielded and steadiedthereby.

Another form ofheddle is shown enlarged at Fig. 10. In this case therectangular heald-frame a is employed, and the wire healds b are passedover the thin rods 0 of said frame in the same way as ordinary wirehealds and as shownat Fig. 9. The eyelet c for the warp is elongated,and through it is passed a string 12 secured at both ends to the weightor lingo b, which is suspended below the bottom shaft of the frame a.The warp (Z is threaded through the loop of string b and eyelet c of theheddle, and is held down in the bottom of said eyelet by the weight orlingo 1), but should there be any obstruction, such as would prevent thewarp traveling downward, the elongated eyelet will permit theheddle-frames to descend the proper distance and the obstructed warp toremain.

Although the form of heddle last described may be used and will actequally as well for the same purpose as the heddle first described, itpossesses the disadvantage of requiring the warp to be threaded throughthe loop of string and also through the eyelet 0, so that more time andlabor are consumed in healdin g the warp.

The heddle-case is represented at e, and is made to hold intact thewhole of the heddles, which enter same and are steadied and kept apartby means of cross rods, wires, or cords 6', supported by plates eattached to the heddle-case or to-the adjustable studs f, secured bynuts f to the heddle-case. Above the shed the heddles are steadied andkept apart by cross wires or cords c suspended by wires 6" from the toprail of the loom, from which they may be easily removed. The heddle-casee is divided at equidistances apart into sections, each to accommodatean equal number of ends of warp by means of an gle-iron or -pieces g,secured at front and back to the heddle-case and adapted to receive andsupport the section-grates g, into which the weights or lingoes I),connected to each heddle in the corresponding section, are capable ofentering, the said -shaped bars g also formin ways for the grates g toslide in,

Under the section-grates and just clear of same is a reciprocatory grateor carriage 71', provided with pulleys 7t, journa-led in brackets 7L2,secured to said grate, which rest on and are adapted to ride over theunder portions of brackets t, bolted at suitable distances apart to thesides of the heddle-case c. The said reciprocatory grate extends acrossthe loom to accommodate the full width of Warp and is constructed ofbars or lengths of thin hoop-iron bored at distances apart equal to thewidth of each section to receive pins or bolts 7L3, which are passedtherethrough and secured by nuts 7L Hollow tubes or bushes 705 areplaced on the pins h between each bar to hold said bars the properdistance apart.

The reciprocatory grate and also the section-grates are'divided intospaces corresponding in number to the healds which the loom is designedto work.

To the front of the reciprocatory grate are connected lever-arms 7',secured on a rod or shaft j, journaled in hearings in the heddlecase andreceiving an oscillatory or rocking motion by means of levers jconnected together by a rod j", from a cam or tappet j", mounted on thecrank-shaft or other suitable rotary part of the loom, which by aleverarm 7' imparts a reciprocatory motion to the grate h.

7t is the stop or knocking-off rod, journaled at is in the heddle-caseand connected by arm is? (see Fig. 2) to the ordinary knocking-offmechanism of the loom. On said knockingotf rod 76 and opposite eachsection-grate are loosely mounted section-levers k carrying at theirlower ends pointers or indicating locking-fingers 75 provided on theirunder sides with a sneck or tooth 75, which is adapted to engage with afixed cross-rail Z when moved in a forward direction. Resting againsteach section-lever k is a frame 7;, secured by set-screws on theknocking-off rod 7t, with which it is movable, independently of the warpstop-motion, when actuated in the ordinary manner for stopping the loom,but it is adapted to be moved, as hereinafter explained, by the warpstop-motion when the latter is actuated by the breakage or failure of anend or ends of the warp.

On the top of the heddle-case and secured to the adjustable studs f areplates m, which support cross-rods, wires, or cords m, extendinglengthwise across the heddle-case. The plates m are arranged at theangle assumed by the lower half of the shed and in line with therunning-board a, and the warp-threads forming said lower half of theshed rest on and are supported by the said cross-rods m in a position alittle above that to which the heald-shafts will permit the heddles todescend, so that the weights or lingoes Z) at the lower ends thereofwill when the warp is in tension and intact be held clear of thereciprocatory grate 72.

The studs f by means of nuts f can be adjusted so as to alter or varythe angle at which the cross or shed rods m shall be supported and toaccord with the angle of the shed.

The action of the motion is as follows: When the warp is intact and atproper tension, the shed-rods m support the warp forming the lower halfof the shed in line with the running-board n, and as this position is alittle above the limit to which the heald-shafts will permit the heddlesto descend the lower or weighted ends of the latter are held above andclear of the reciprocatory grate 7L, while the latter halves of theheddles remain slack, these conditions being maintained so long as noend of warp fails or breaks or becomes unduly slack. \Vhen this occurs,however, the support to the heddle concerned is immediately destroyed,and on the heald-shaft descending, if it is not already down, the weightor lingo b on the end of the heddle lowers through the section-grate g,corresponding to the section of warp in which the break or failure hasoccurred, into one of the spaces in the reciprocatory grate h,whichengages said lingo as it moves forward, and thus locks the said grateand the sectiongrate together, whereby the continued movement of thereciprocatory grate causes the section-grate to be slid forward with it,in doing which the bracket or extension 9 on the front of thesection-grate abuts against the corresponding section-lever k and movesit on its pivot into the position indicated by dotted lines in Fig. 1,causing the pointer or finger 7a to advance and engage with thecrossrail 1 and lock the parts. The said movement of the section-lever75 also forces its corre sponding frame into the position indicated bydotted lines in Fig. 1, and thereby rocks or oscillates the knocking-offrod is, which by means of the arm k and connecting link or rod actuatesthe ordinary stopping mechanism of the loom and brings it to astandstill. The pointer or locking finger 70 engaged with the cross-railZ, indicates to the weaver the section in which the end is down orslack, and he is thus enabled to speedily locate it and tie it up orrestore it to its proper tension.

Levers 0, pivoted at 0 at the rear of the heddle-case e opposite eachsection-grate g and connected by slotted rods or links 0 with pins 0secured to the lower ends of the section-levers 79 are employed for thepurpose of oscillating the section-levers and stop-rod 7t in the samemanner as above set forth to stop the loom when the section-grateshappen to be slid in the direction of arrow 1) by the heddle or heddlesengaging with the reciprocatory grate during its return or backwardmovement; but ordinarily this added mechanism would only be required forvery fastrunning looms, weaving, say, from two hundred to three hundredpicks per minute and the reciprocatory grate it working at half thespeed of the loom.

A stop-piece q is employed to limit the outward movement of thesection-levers 70", and, if desired, a button 0*, adapted to be engagedand pressed by the section-levers when the latter are forced into theposition shown in dotted lines in Fig. 1 and connected electrically withan indicating-board in the room or office, may be employed, so that 011the loom being stopped by the failure or breakage of an end or ends ofwarp the button will be pressed and complete the circuit and thestoppage thereby indicated in the room or office.

Having thus fully described my invention, what I claim is-- 1. In astop-motion attachment for looms, the combination with the heddles,having eyes for the passage of the warp-threads, and the weights orlingoes, of the section-grates, the section-levers connected therewith,the knocking-off rod, the frames connected there with against which thesaid levers are adapted to strike, and the reciprocating grate and meansfor operating the same, the stopping mechanism and the connectionsbetween the same and the knocking-off rod, substantially as described.

2. In a stop-motion attachment for looms, the combination with theheddles, having eyes for the passage of the warp-threads .and theweights or lingoes, of the section-grates, the section-levers connectedtherewith, the knocking-off rod, the frames secured thereto, thereciprocating grate, the levers connected therewith, and the cam foroperating said levers, and the stopping mechanism and connectionsbetween the same and the knockingo'lf rod, substantially as described.

3. In a stop-motion attachment for looms, the combination with theheddles, provided with eyes for the passage of the warp-threads, and theweights or lingoes, of the sectiongrates, the section-levers connectedtherewith, the knocking-off rod, the frames secured thereto, the pivotedfingers formed with notches connected with said levers, the rail withwhich said notches are adapted to engage, the reciprocating grate, andmeans for operating the same, the stopping mechanism and connectionsbetween the same and the knocking-off rod, substantially as described.

at. In a stop-motion attachment for looms, the combination with theheddles, provided with eyes for the passage of the warp-threads, and theweights or lingoes, of the sectiongrates, the section-levers connectedtherewith, the knocking-oft rod, the frames secured thereto, the pivotedfingers connected with said levers, provided with notches, the rail withwhich said notches are adapted to engage, the reciprocating grate, thelevers connected therewith, and the cam for operating the same, and thestopping mechanism and connections betweenthe same and the knocking-offrod, substantially as described.

5. In a stop-motion attachment for looms, the combination with theheddles, having eyes for the passage of the warp-threads, and theweights or lingoes, of the section-grates the section-levers connectedtherewith, the knocking-off rod, the frames secured thereto, the pivotedfingers provided with notches, the rail with which said notches engage,the slotted rods connected with said fingers, the levers pivotedthereto, the reciprocating grate, and means for operating the same, andthe stopping mechanism and connections between the same and theknocking-off rod, substantially as described.

6. In a stop-motion attachment for looms, the combination. with theheddles, having eyes for the passage of the warp-threads, and theweights or lingoes, of the section-grates, the section-levers connectedtherewith, the knocking-off rod the frames secured thereto, the notchedfingers pivoted to said levers, the rail, the slotted rod connected withsaid fin gers, the levers pivoted thereto, the reciproeating grate, thelevers connected therewith and the cam for operating the same, and theIIO stopping mechanism and connections between the same and theknocking-off rod, substantially as described.

7. In a stop-motion attachment for looms, the combination with theheddles, having eyes for the passage of the warp-threads, and theweights or lingoes, of the section-grates, the section-levers connectedtherewith, the knocking-off rod, the frames secured thereto; the notchedfingers pivoted to said levers, the rail, the slotted rods connectedwith said fingers, the levers pivoted thereto and the transverse guidewires or cords between which the heddle-wires pass, and the stoppingmechanism and connections between the same and the knocking-off rod,substantially as described.

In testimony that I claim the foregoing as my own I have hereuntoaffiXed my signature in presence of two witnesses.

JOHN VICKERMAN. lVitnesses:

A. J. FRANKLIN, ARNOLD 'Il. PALIN.

